QB's should always be a direct reflection of their coaches. They are the "coach" on the field and it is extremely important that Head Coach and QB be on the same page. Shula and Marino, Montana and Elway, Brady and BillBelly would be good examples.
I think Gus is a lot like Saban. They are tough, no-nonsense, in-your-face personalities that handle adversity very well. AJ Feeley is Hollywood. He's got the surfer look and attitude with the hot girlfriend. I never saw AJ and Saban on the same page, which I think caused Saban to ultimately go with Gus.
What I liked best about Gus on Sunday was that he didn't panic after the bad interception. He sucked it up and did what he had to do to win the game. I would say Saban feels the same way.